How Do I Know If WSL 2 Is Installed?

What’s actually going on here?

Windows Subsystem for Linux (WSL) gives you a Linux environment on Windows without booting up a full virtual machine. WSL 2 cranks up the speed by using an actual Linux kernel instead of translating system calls like WSL 1 does. Honestly, this is the best approach if you’re compiling code or running Docker containers. Come 2026, WSL 2 becomes the default for fresh installs, but plenty of folks still run WSL 1 or have it turned off. The big difference you’ll feel is raw performance.

Here’s how to check for WSL 2

1. Peek at the version: Fire up PowerShell or Command Prompt (Win + X > Windows Terminal (Admin)) and type: wsl -l -v

   You’ll get a table with columns NAME, VERSION, and STATE. If any distro shows 2 under VERSION, you’ve got WSL 2 installed.

2. Confirm your Windows build: Hit Win + R, type winver, and press Enter. Your Windows version must be at least Windows 10 version 2004 (Build 19041) or Windows 11. Anything older than 2020 won’t play nice with WSL 2 natively. Microsoft Support
3. Turn on WSL 2 if it’s missing:
   • Head to Control Panel > Programs > Turn Windows features on or off.
   • Tick both Windows Subsystem for Linux and Virtual Machine Platform.
   • Click OK, then reboot.
4. Make WSL 2 your default: In an admin PowerShell window, run: wsl --set-default-version 2

   That way, any new distros you install will land in WSL 2. Double-check with wsl -l -v once more.

Still not working? Try this

• Grab the latest kernel manually: If wsl -l -v throws an error, grab the newest WSL 2 kernel from Microsoft’s WSL site and install it. Then reboot.
• Watch for Hyper-V clashes: WSL 2 needs Hyper-V. If you’re running VirtualBox or VMware, turn off Hyper-V temporarily: bcdedit /set hypervisorlaunchtype off

  Heads-up: This kills WSL 2 until you re-enable Hyper-V with bcdedit /set hypervisorlaunchtype auto and restart. Microsoft Docs

• Bump a distro to version 2: If a distro like Ubuntu still shows version 1, upgrade it: wsl --set-version <DistroName> 2

  Swap in your distro’s name from wsl -l. Expect 10–30 minutes depending on how fast your disk is.

Keep WSL 2 running smoothly